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Intel&reg; Integrated Performance Primitives MP3 Integer-based Decoder  
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<h1>
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<span lang="EN-US">
Intel&reg; Integrated Performance Primitives  
<br>
MP3 Integer-based Decoder  
</span>
</i>
</h1>
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<h5>
<A HREF="#Overview">
Overview  
</A>
<BR>
<A HREF="#Package_Contents">
Package Contents  
</A>
<BR>
<A HREF="#Known_Limitations">
Known Limitations  
</A>
<BR>
<BR>
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<h2>
<a NAME="Overview">
</a>
Overview  
</h2>
<div class="Section1">
<span lang="EN-US">
This sample illustrates how to use the Intel  
<sup>
&reg;  
</sup>
Integrated Performance Primitives (Intel  
<sup>
&reg;  
</sup>
IPP) signal processing and audio coding functions to implement a simple integer-based MPEG-1/2 layer1/2/3 audio decoder.  
<br>
<br>
</span>
<span lang="EN-US" style="font-weight: normal">
The following audio data are supported:  
<br>
MPEG-1: layers1,2,3  
<br>
MPEG-2, low sampling frequencies extension: layers1,2,3  
<br>
MPEG-2.5 (unofficial), extra low sampling frequencies extension: layers1,2,3  
</span>
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<P>
Additional information on this software as well as other Intel software performance products is available at  
<A HREF="http://developer.intel.com/software/products/">
http://developer.intel.com/software/products/  
</A>
.  
<h2>
<a NAME="Package_Contents">
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Package Contents  
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The  
<b>
Intel  
<sup>
&reg;  
</sup>
IPP MP3 Integer-based Decoder  
</b>
package contains the following files:  
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<o:p>
</o:p>
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<b>
.\ipp-samples\audio-video-codecs\codec\mp3_dec_int\  
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readme.htm  
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<td style="padding: 0.75pt" width="329">
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This file  
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.\ipp-samples\audio-video-codecs\codec\mp3_dec_int\include\  
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mp3dec_own_int.h  
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MPEG audio decoder internal header file  
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umc_mp3_dec.h  
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MPEG audio decoder UMC interface  
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<b>
.\ipp-samples\audio-video-codecs\codec\mp3_dec_int\src\  
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mp3dec_api_int.c  
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Source file containing implementation of top-level decoder functions.  
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mp3dec_int.cpp  
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MPEG audio UMC interface implementation  
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mp3dec_huftabs_int.c  
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Source file specific to Huffman decoding  
</span>
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mp3dec_layer1_int.c  
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Source file specific to decoding layer 1 audio  
</span>
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mp3dec_layer2_int.c  
</td>
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<span lang="EN-US">
Source file specific to decoding layer 2 audio  
</span>
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mp3dec_layer3_int.c  
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Source file specific to decoding layer 3 audio  
</span>
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Please note that some necessary files for this decoder are in the&nbsp; Intel  
<sup>
&reg;  
</sup>
IPP Common Audio Codec Library package (see  
<a href="../common/readme.htm">
..\common\readme.htm  
</a>
)  
</font>
</span>
</h2>
<h2>
<a NAME="Known_Limitations">
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Known Limitations  
</h2>
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The decoder supports the standard ISO/IEC 11172-3 and&nbsp; ISO/IEC 13181-3 with certain restrictions.  
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MPEG-2&nbsp; multichannel extension is not supported in the current version  
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<P>
&nbsp;  
<br>
Copyright &copy; 2002-2008 Intel Corporation. All rights reserved.  
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